in a couple of minutes, nbc's exclusive interview with president obama as brian williams has a sit-down with the president. this is the third shot by chung. looking closer and closer to a concession. >> i'll be amazed if that's not it. yep. >> and that is it. 4-2. peter uihlein's dream has come true. he's the 2010 u.s. amateur champion. very high level of golf played all week long by both of these finalists. let's send it down to roger maltbie. >> thank you, dan. peter congratulations. your emotions on the biggest golfing day of your life? >> yeah, i'm a little shocked, a little surprised and it's so surreal, and you know, david is a great player and great competitor but i just was fortunate enough today to come out on top. >> the putt at 14 really seemed to ice things in your direction. it was a putt you seemed like you had earlier today. >> yeah, really the exact same putt i had and down at 15, both identical putts and 14 i made sure to get it there this time and made it, so that helped. >> congratulations and enjoy with your family. >> thank you. i hope everybody in stillwater stays